tailq: remove unneeded inclusions

[dpdk.git] / lib / librte_eal / common / eal_common_pci.c

diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c
index bf2793f..808b87b 100644 (file)
--- a/lib/librte_eal/common/eal_common_pci.c
+++ b/lib/librte_eal/common/eal_common_pci.c
@@ -74,7 +74,6 @@
 #include <rte_per_lcore.h>
 #include <rte_memory.h>
 #include <rte_memzone.h>
-#include <rte_tailq.h>
 #include <rte_eal.h>
 #include <rte_string_fns.h>
 #include <rte_common.h>
@@ -108,7 +107,10 @@ static int
 pci_probe_all_drivers(struct rte_pci_device *dev)
 {
        struct rte_pci_driver *dr = NULL;
-       int rc;
+       int rc = 0;
+
+       if (dev == NULL)
+               return -1;
 
        TAILQ_FOREACH(dr, &pci_driver_list, next) {
                rc = rte_eal_pci_probe_one_driver(dr, dev);
@@ -123,6 +125,99 @@ pci_probe_all_drivers(struct rte_pci_device *dev)
        return 1;
 }
 
+#ifdef RTE_LIBRTE_EAL_HOTPLUG
+/*
+ * If vendor/device ID match, call the devuninit() function of all
+ * registered driver for the given device. Return -1 if initialization
+ * failed, return 1 if no driver is found for this device.
+ */
+static int
+pci_close_all_drivers(struct rte_pci_device *dev)
+{
+       struct rte_pci_driver *dr = NULL;
+       int rc = 0;
+
+       if (dev == NULL)
+               return -1;
+
+       TAILQ_FOREACH(dr, &pci_driver_list, next) {
+               rc = rte_eal_pci_close_one_driver(dr, dev);
+               if (rc < 0)
+                       /* negative value is an error */
+                       return -1;
+               if (rc > 0)
+                       /* positive value means driver not found */
+                       continue;
+               return 0;
+       }
+       return 1;
+}
+
+/*
+ * Find the pci device specified by pci address, then invoke probe function of
+ * the driver of the devive.
+ */
+int
+rte_eal_pci_probe_one(struct rte_pci_addr *addr)
+{
+       struct rte_pci_device *dev = NULL;
+       int ret = 0;
+
+       if (addr == NULL)
+               return -1;
+
+       TAILQ_FOREACH(dev, &pci_device_list, next) {
+               if (rte_eal_compare_pci_addr(&dev->addr, addr))
+                       continue;
+
+               ret = pci_probe_all_drivers(dev);
+               if (ret < 0)
+                       goto err_return;
+               return 0;
+       }
+       return -1;
+
+err_return:
+       RTE_LOG(WARNING, EAL, "Requested device " PCI_PRI_FMT
+                       " cannot be used\n", dev->addr.domain, dev->addr.bus,
+                       dev->addr.devid, dev->addr.function);
+       return -1;
+}
+
+/*
+ * Find the pci device specified by pci address, then invoke close function of
+ * the driver of the devive.
+ */
+int
+rte_eal_pci_close_one(struct rte_pci_addr *addr)
+{
+       struct rte_pci_device *dev = NULL;
+       int ret = 0;
+
+       if (addr == NULL)
+               return -1;
+
+       TAILQ_FOREACH(dev, &pci_device_list, next) {
+               if (rte_eal_compare_pci_addr(&dev->addr, addr))
+                       continue;
+
+               ret = pci_close_all_drivers(dev);
+               if (ret < 0)
+                       goto err_return;
+
+               TAILQ_REMOVE(&pci_device_list, dev, next);
+               return 0;
+       }
+       return -1;
+
+err_return:
+       RTE_LOG(WARNING, EAL, "Requested device " PCI_PRI_FMT
+                       " cannot be used\n", dev->addr.domain, dev->addr.bus,
+                       dev->addr.devid, dev->addr.function);
+       return -1;
+}
+#endif /* RTE_LIBRTE_EAL_HOTPLUG */
+
 /*
  * Scan the content of the PCI bus, and call the devinit() function for
  * all registered drivers that have a matching entry in its id_table